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Where is the main relay located in the BMW 5 Series?

1 Answers

OTalia

07/30/25 1:22am

BMW 5 Series main relay is located inside the engine compartment fuse box. Relay Overview: A relay is an automatic control device where the output undergoes a step change when the input (electrical, magnetic, acoustic, optical, or thermal) reaches a certain value. Automotive relays are relays used in vehicles. Relay Characteristics: Automotive relays feature high load-switching capacity, excellent impact resistance, and high vibration resistance. Vehicle electrical systems mostly use 12V, with most coil voltages designed for 12V. In the engine compartment, the required ambient temperature range is -40°C to 125°C, while for other locations it's -40°C to 85°C.

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